Inference
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Cursor

Composer 2 Fast

Composer 2 Fast is a reasoning model from Cursor in the Composer family. It has 1 scored result in 1 category. It has no index.

  • Closed weights
  • Reasoning
  • Input: text
  • Released 2026-03
UnrankedEnough results for an index.
IndexAll categories, out of 100.UnrankedMedian 51.0
CoverageIndex weight that has results.20%
SpeedOutput tokens per second.—Median 67/s
First tokenSeconds to the first output token.—Median 1.3 s
Input / 1MUS dollars per 1M input tokens.—Median $0.60
Output / 1MUS dollars per 1M output tokens.—Median $2.55
ContextMaximum tokens in one request.200KMedian 262K
EloLMArena rating and rank.—Median 1422

Capabilities

Index per category, out of 100.
Out of 100
AgenticMulti-step tasks with tools.None counted——
CodingCode writing and repair.1 counted72.9—
ReasoningLogic problems and puzzles.None counted——
MultimodalTasks with images and text.None counted——
KnowledgeFacts and expert knowledge.None counted——
MultilingualTasks in many languages.None counted——
InstructionTasks with strict prompt rules.None counted——
MathMath problems.None counted——

Results

1 counted
BenchmarkThe benchmark name.ResultThe score from the source.PlacePlace among results on this benchmark.
React Native EvalsCoding94.9%2 / 16

Sources

BenchLMCC BY-NC 4.0

Questions

What is the context window of Composer 2 Fast?
200K tokens.
Is Composer 2 Fast open source?
No. Its weights are not published.
When was Composer 2 Fast released?
March 2026.

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